Charles m



(N5 Model.)

C, M. BURGESS,

SHEET METAL LOGE EASE.

190.399,239. Pat nted Mar. l2, 1889.

FVW/755555.

UNITED STATES ATENT @innen CHARLES M. lll'RGESS, OF NEY BRITAIN,(ONNECTICUT, ASSIGSOR TO .THE RSSETA t ERVIN MANUFACTURTG COMPAXY, OFSABIE PLACE.

S'H EET-NI ETAL. LOCK-CAS E.

SPECIFICATION forming part of Letters Patent No. 399,239, dated Marchl2, 1889.

Application tiled January 24, 1889. Serial No. 297,399. (No model.)

To @ZZ whom t may concern.-

Be. it known that I, CHARLES lll. BURGESS, n Citizen of the UnitedStates, residing at New Britain, in the eonnty ot' Hartford and State ofConneoiient, have invented certain new and nset'nl Improvements inSheet-Metab Loek-Crises, of which the following is d` specitice'ition.

)ly invention relates to improvements in sheetmetnl lock-cases; and theobj ects of my inventimi are to torni n simple and inexpensive lock-ensefrom sheet metal which shall be :it the sanne time both durable andeiticient.

ln the ziecon'qgnnying drawings, Figure l is a pers'ieeiivc view of myloclvease, showing the face-platte, the upper end ple-te, and theesp-plat e. Fig. 2 is n transverse section taken on the horizontal planeof the upper surface oll the top end plate, and Fig. $3 is aplan Viewshowing n inodiliezttion.

The lock-ense shown in Figs. l and 2 is intended to be used fornon-reversible latches by securing seid ense to the surface of the door.i designfttes the trice-plate, 5 the lockplate, (i the cnp-plate, 'T therem' edge plate, and S S the top and bottoni end plates. 1 form thefnce-plnte i, the leek -plnte 5, and rear edge plete, 7, all in onepiece of sheet metal, the faceplate -l and rear edge-plate, 7, beingbent np troni the opposite vertical edges of the cap-plaie 5, ns shown.The top and bottom end pln'es, d, :tre set n little below the npper andabove the lower edges of the lockplnte 5, and nre provided :it erichend, and preferably :it one edge, with tenons .l, which are inserted ineorrespondingly-shnped inortises in the parts Jr, 5, and 7, the tenonson the ends of the end plate, S, being riveted down and. entering,respectively, the tace-plate 4: and back edge plate, 7, as shown mostclearly in Fig. 9, thereby binding snid parts firmly together. Theltenons 9, which enter mortises in the carp-plate, are also headed down'for binding that edge of the end pla-tes to the capplate; but this isnot essentiel, although prefbeing secured vupon the surface of the door,

ernble. The cap-platte ti is let into the side of the lock-ease nshortdistance, as indicated by the broken lines in Fig. 2. Then thusconstructed, the lock is particularly adapted Jfor in which ense boltsmay pass through the lockcnse near one edge from the outside, twocorners ot the cap-plate (i being cnt away, as at l0 l0, to permit thepassage ot` sztid bolts, while the projecting selvage or edge of thetaee- 5 plate which projects beyond the cap-platte side of the lock-oasenitty be provided with. screw-holes ll 1l, thro n gh which to passscrews in securing the face-plate edge of the lockca-se to the door.

In Fig. I have shown the same general construction, excepting that theedges ot the faceplate 4 and rear edge plate, 7, are iiush with theouter side of the cap-plate l?. The faceplate el, lock-plate 5, and rearedge plate, 65 7, are, as before. described, all 'formed by bending fromone piece of metal, and the top and bottom end plates, S, are secured tothe faceplate and rear edge plate by tenons and mortises, as beforedescribed. By making the carp-plate flush with the edges of the parts 4and 7 on that side of the lock the case is adapted for e, reversiblelatch, end may be secured with either side against the surface of a doorby bolts passing through the lock-case. 7 5

l claim as my invention- The herein-described sheetnietal lock-ease,consisting, essentially, of the face-plate lockphite 5, rem' edge plate,7, all formed from a.- singlc piece of sheet drietal, a cap-plete, and8o the top and bottom end pieces, 8 S, provided with tenons at each end,by means of which said top and bottom end plates are iirmly secured tothe parts 4C and 7, substantially es described, and for the purposespecified.

CHAS. M. BURGESS.

Witnesses:

Trios. BISHOP, M. S. WIARD.

